Vulnerability · Published Oct 6, 2026 · Assigned by Gitea

CVE-2026-96580Gitea Actions memory exhaustion through large static matrices

High 7.5

In plain English

A high-severity uncontrolled resource consumption in Gitea from Gitea. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.4%top 71.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Gitea expanded a workflow's static `strategy.matrix` into its full Cartesian product without a size limit when creating a run, before the fork pull request approval gate applied. A user who can open a pull request from a fork could submit a small workflow file whose matrix expands to a very large number of jobs, consuming server memory and potentially terminating the Gitea process. No runner is required. Static matrices above 256 combinations are now rejected before expansion.

Affected products (as reported)

Vendor	Product	Versions
Gitea	Gitea	0 – through 1.27.3

Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

GitHub Security Advisory GHSA-p3rv-cr5f-9gjh vendor-advisory
Fix: go-gitea/gitea pull request #39295 patch
Gitea 28.0.0 release announcement release-notes
go-gitea/gitea v28.0.0 release release-notes